Fan



FIG. 1 is a top, front, right side perspective view of a fan showing my new design;

FIG. 2 is a bottom, rear, right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing of a fan blade and portions of the fan form no part of the claimed design. 

CLAIM I claim the ornamental design for a fan, as shown and described. 